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John Mccormack — 1900 US Census Record
Linked across censuses1900 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this John Mccormack across the 1900, 1910 and 1920 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1838), then head of a 6-person household.
Age 62
b. ~1838
Male
Head
Born: Ireland
Married
1900 Census Record Details
| Census Year | 1900 |
| Location | Philadelphia, Pennsylvania |
| Surname | McCormack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | June |
| Birth Year | 1838 |
| Year of Immigration | 1872 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Farm Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Farm Laborer |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1838 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
6 people recorded at the same address in the 1900 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sarah Mccormack | Daughter | — | 28 | ~1872 |
| John Mccormack | Head | — | 62 | ~1838 |
| Sarah Mccormack | Spouse | — | 52 | ~1848 |
| Mary Mccormack | Daughter | — | 17 | ~1883 |
| Maggie Mccormack | Daughter | — | 26 | ~1874 |
| Samuel Mccormack | Son | — | 23 | ~1877 |
Census Appearances
1900
Philadelphia, Pennsylvania
Head, age 62
Philadelphia, Pennsylvania · implied b. ~1838 — 6 household members
| Surname | McCormack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Ireland |
| Birth Month | June |
| Birth Year | 1838 |
| Year of Immigration | 1872 |
| Naturalization Status | Alien |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farm Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Philadelphia, Pennsylvania
Head, age 70
Philadelphia, Pennsylvania · implied b. ~1840 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Single |
| Birthplace | Ireland |
| Children Living | 1862 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Boiler Maker |
| Industry | Navy Yard |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Philadelphia, Pennsylvania
Other, age 82
Philadelphia, Pennsylvania · implied b. ~1838 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | boarder |
| Sex | M |
| Color / Race | White |
| Age | 82 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1852 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | No |
| Speaks English | No |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1862 |
| Birthplace (normalized) | ireland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Mccormack across 3 US Census years (1900, 1910 and 1920) in Philadelphia, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
John Mccormack
Head · 1900 · age 62 · b. ~1838 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1900 US Federal Census — Philadelphia, Pennsylvania
Open full size
1900 US Federal Census — Philadelphia, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu1465unit:0470)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irvin Sigler | 40 | Son | Machinist | New Jersey |
| 2 | Valentine Weingard | 43 | Head | Rope Maker | Pennsylvania |
| 3 | Martha S Weingard | 39 | Wife | — | Pennsylvania |
| 4 | Martha D Weingard | 16 | Daughter | Rope Maker | Pennsylvania |
| 5 | Frederick J Weingard | 13 | Son | At School | Pennsylvania |
| 6 | Carrie L Weingard | 11 | Daughter | At School | Pennsylvania |
| 7 | William L Weingard | 7 | Son | — | Pennsylvania |
| 8 | John M Weingard | 5 | Son | — | Pennsylvania |
| 9 | Jacob Wild | 27 | Head | Teamster | Germany |
| 10 | Mollie Wild | 25 | Wife | — | Germany |
| 11 | Charles Wild | 0 | Son | — | Pennsylvania |
| 12 | Henry Wild | 22 | Brother | — | Germany |
| 13 | John Mccormack THIS PERSON | 62 | Head | Farm Laborer | Ireland |
| 14 | Sarah Mccormack | 52 | Wife | — | Ireland |
| 15 | Sarah Mccormack | 28 | Daughter | Housekeeper | Ireland |
| 16 | Maggie Mccormack | 26 | Daughter | Paper Cutter | Ireland |
| 17 | Samuel Mccormack | 22 | Son | Sawyer | Ireland |
| 18 | Mary Mccormack | 16 | Daughter | At School | Ireland |
| 19 | Samuel Getty | 58 | Head | Painter | Pennsylvania |
| 20 | Samuel R Getty | 25 | Son | Painter | Pennsylvania |
| 21 | Eva M Getty | 18 | Daughter | Housekeeper | Pennsylvania |
| 22 | Lee F Lain | 33 | Boarder | Apparatus Clerk | Delaware |
| 23 | Charlotte Lain | 28 | Boarder | — | Pennsylvania |
| 24 | John Pratt | 50 | Boarder | Laborer In Iron Works | Pennsylvania |
| 25 | Thomas L Mahin | 38 | Head | Plumber | New Jersey |
| 26 | Lucy Mahin | 28 | Wife | — | England |
| 27 | Effie L Mahin | 16 | Son | — | Pennsylvania |
| 28 | Irma L Mahin | 12 | Daughter | — | Pennsylvania |
| 29 | Richard S Headley | 39 | Head | Barber | Pennsylvania |
| 30 | Ella M Headley | 33 | Wife | — | Pennsylvania |
| 31 | Mabel B Headley | 15 | Daughter | At School | Pennsylvania |
| 32 | Helen A Headley | 13 | Daughter | At School | Pennsylvania |
| 33 | Edith D Headley | 11 | Daughter | At School | Pennsylvania |
| 34 | Josiah R Headley | 10 | Son | At School | Pennsylvania |
| 35 | John B Headley | 8 | Son | — | Pennsylvania |
| 36 | Emma R Headley | 9 | Sister | — | New Jersey |
| 37 | William H Penn | 56 | Head | — | Pennsylvania |
| 38 | Elizabeth Penn | 57 | Wife | — | Pennsylvania |
| 39 | Edward S Penn | 36 | Son | Rope Maker | Pennsylvania |
| 40 | Henry Dorsey | 29 | Servant | Laborer | Virginia |
| 41 | Frederick Baun | 57 | Head | Butcher | Germany |
| 42 | Catherine Baun | 54 | Wife | — | Germany |
| 43 | Frederick Baun | 23 | Son | Butcher | Pennsylvania |
| 44 | Caroline Baun | 22 | Daughter | Housekeeper | Pennsylvania |
| 45 | Dora Baun | 18 | Daughter | Housekeeper | Pennsylvania |
| 46 | Rosa Baun | 16 | Daughter | Housekeeper | Pennsylvania |
| 47 | William Tomkins | 40 | Head | Rope Maker | New Jersey |
| 48 | Samuel R Tomkins | 21 | Son | Blacksmith | New Jersey |
| 49 | John H Tomkins | 16 | Son | Laborer Iron Works | New Jersey |
| 50 | Annie Bringman | 32 | Servant | Housekeeper | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)